Official NHA Assessment

Race 1: PIERE STRYDOM 5600 WINNERS & COUNTING MAIDEN JUVENILE PLATE (For 2 year olds)

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Line Horse
None identified
Reference for assessment
Exact Matches
1 / 12
Calculated = Official
Close Matches
1 / 12
Within 2 points
Significant Diffs
10 / 12
More than 5 points
Detailed Assessment
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Pos  Horse                Age  Weight  Fin  Lengths  WFA   Pre   Race Rating  New   Adj  
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1    Rifle Queen          2    57.5    1    0.00     0.5   -     -            -     +0
2    Clever Trevor        2    60.0    2    1.50     0.5   -     -            -     +0
3    Umzingeli Wenyathi   2    60.0    3    4.20     0.5   -     -            -     +0
4    Seed Seeker          2    60.0    4    6.40     0.5   -     -            -     +0
5    Queensland           2    57.5    5    7.30     0.5   -     -            -     +0
6    Force Publique       2    60.0    6    7.70     0.5   -     -            -     +0
7    Au Revoir Tanya      2    57.5    7    11.00    0.5   -     -            -     +0
8    Matts Rocket         2    57.5    8    21.25    0.5   -     -            -     +0
9    Abbey Sniper         2    60.0    9    21.50    0.5   -     -            -     +0
10   Memphis              2    57.5    10   28.25    0.5   -     -            -     +0
11   Frankie Fahrenheit   2    60.0    11   31.75    0.5   -     -            -     +0
99   In The Willows       2    56.0    99   0.00     0.5   -     -            -     +0
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Horse-by-Horse Comparison

Pos Horse Pre-Rating Official New Calculated Discrepancy WFA (kg) Line Horse Calculation
1 Rifle Queen - 105 - +105 0.5 -
2 Clever Trevor - 89 - +89 0.5 -
3 Umzingeli Wenyathi - 90 - +90 0.5 -
4 Seed Seeker - 81 - +81 0.5 -
5 Queensland - 80 - +80 0.5 -
6 Force Publique - 84 - +84 0.5 -
7 Au Revoir Tanya - - - ✓ Match 0.5 -
8 Matts Rocket - 57 - +57 0.5 -
9 Abbey Sniper - 44 - +44 0.5 -
10 Memphis - 40 - +40 0.5 -
11 Frankie Fahrenheit - 63 - +63 0.5 -
99 In The Willows - 54 - - 0.5 -
Assessment Methodology
Calculation Steps:
  1. Identify Line Horse - consistent performer used as reference
  2. Calculate WFA Allowance based on age, distance, and month
  3. Apply Drag Adjustment for beaten margin
  4. Calculate Actual Weight Performance:
    Weight - Drag - WFA
  5. Compare to Line Horse to determine race rating
  6. Apply special rules (maiden caps, layoff allowance)
Key Formulas:
  • Drag Effect: Varies by distance (see Benchmarks page)
  • 1 length ≈ 1kg at 1 mile (1600m)
  • WFA Scale: Based on Admiral Rous's 1855 table
  • Rating Points: 1kg = 2 rating points